Heatstroke emergency

I feel absolutely horrible!! 5 of my 10 week olds got trapped under the little plastic wading pool all day in the direct sunlight. 4 died & 1 was barely holding on. I immediately started dribbling water into her beak & putting water onto her feet & under her wings. She was holding her head up but wobbly. Tried to walk but tumbled. So I put her into a shallow tub filled with cool water for awhile & have continued using a syringe to get small amounts of water in her. It's been over an hour now & I have her in a comfortable, cool spot in the garage & she's resting & occasionally moving about the bin & then resting again. I have water, food, fresh worms, all available for her. Any other suggestions?

Temps in So. Cal topped 113 today and our beloved Light Brahma suffered a heat stroke. Luckily we caught it just as she collapsed and immediately started trying to cool her off. We put her in a cool tub of water and rubbed the water under her wings and started giving her water through a straw. She could not stand and was barely able to hold her head up. Within about 10 minutes she stopped panting but could not stand on her own. We continued to feed her water and then ran to the store and got electrolytes. Within about an hour she was trying to stand on her own. 3 hours later she is normal like nothing every happened. She was on death's door for sure and I can't believe we got so lucky.
I understand that once they have heat stroke, it is more likely to happen again which scares me.